How Do You Draw A Genetic Pedigree Chart?
A pedigree chart is a mapping of a family tree that focuses specifically on whether or not members of the family have a genetic variation. The chart enables you to determine whether a trait is dominant or recessive, as well as if it is X-linked or autosomal. Using this information, it is possible to better determine whether a child born to a couple is likely to also have the same trait. Keep each familial generation on its own row when you begin drawing the tree. For example, an individual’s parents, aunts and uncles would be on the row above him; siblings and cousins would be on the same row as he; and children, nieces and nephews would be on the row beneath him. Use the appropriate gender shape for each member of the pedigree chart. Women are represented with a circle, and males are represented with a square. Use lines to show relations. A horizontal line between a circle and square shows a married couple that produced offspring. Children are represented by drawing a vertical line do
